sonic-buildimage/platform/broadcom/sonic-platform-modules-accton/as5812-54t/classes/thermalutil.py

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#!/usr/bin/env python
#
# Copyright (C) 2017 Accton Technology Corporation
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# ------------------------------------------------------------------
# HISTORY:
# mm/dd/yyyy (A.D.)
# 11/13/2017: Polly Hsu, Create
#
# ------------------------------------------------------------------
try:
import time
import logging
import glob
from collections import namedtuple
except ImportError as e:
raise ImportError('%s - required module not found' % str(e))
class ThermalUtil(object):
"""Platform-specific ThermalUtil class"""
THERMAL_NUM_ON_MAIN_BROAD = 3
THERMAL_NUM_1_IDX = 1 # 1_ON_MAIN_BROAD
THERMAL_NUM_2_IDX = 2 # 2_ON_MAIN_BROAD
THERMAL_NUM_3_IDX = 3 # 3_ON_MAIN_BROAD
BASE_VAL_PATH = '/sys/bus/i2c/devices/{0}-00{1}/hwmon/hwmon*/temp1_input'
""" Dictionary where
key1 = thermal id index (integer) starting from 1
value = path to fan device file (string) """
_thermal_to_device_path_mapping = {}
_thermal_to_device_node_mapping = {
THERMAL_NUM_1_IDX: ['15', '48'],
THERMAL_NUM_2_IDX: ['16', '49'],
THERMAL_NUM_3_IDX: ['17', '4a'],
}
logger = logging.getLogger(__name__)
def __init__(self, log_level=logging.DEBUG):
ch = logging.StreamHandler()
ch.setLevel(log_level)
self.logger.addHandler(ch)
thermal_path = self.BASE_VAL_PATH
for x in range(self.THERMAL_NUM_1_IDX, self.THERMAL_NUM_ON_MAIN_BROAD+1):
self._thermal_to_device_path_mapping[x] = thermal_path.format(
self._thermal_to_device_node_mapping[x][0],
self._thermal_to_device_node_mapping[x][1])
def _get_thermal_node_val(self, thermal_num):
if thermal_num < self.THERMAL_NUM_1_IDX or thermal_num > self.THERMAL_NUM_ON_MAIN_BROAD:
self.logger.debug('GET. Parameter error. thermal_num, %d', thermal_num)
return None
device_path = self.get_thermal_to_device_path(thermal_num)
for filename in glob.glob(device_path):
try:
val_file = open(filename, 'r')
except IOError as e:
self.logger.error('GET. unable to open file: %s', str(e))
return None
content = val_file.readline().rstrip()
if content == '':
self.logger.debug('GET. content is NULL. device_path:%s', device_path)
return None
try:
val_file.close()
except:
self.logger.debug('GET. unable to close file. device_path:%s', device_path)
return None
return int(content)
def get_num_thermals(self):
return self.THERMAL_NUM_ON_MAIN_BROAD
def get_idx_thermal_start(self):
return self.THERMAL_NUM_1_IDX
def get_size_node_map(self):
return len(self._thermal_to_device_node_mapping)
def get_size_path_map(self):
return len(self._thermal_to_device_path_mapping)
def get_thermal_to_device_path(self, thermal_num):
return self._thermal_to_device_path_mapping[thermal_num]
def get_thermal_1_val(self):
return self._get_thermal_node_val(self.THERMAL_NUM_1_IDX)
def get_thermal_2_val(self):
return self._get_thermal_node_val(self.THERMAL_NUM_2_IDX)
#def main():
# thermal = ThermalUtil()
#
# print 'get_size_node_map : %d' % thermal.get_size_node_map()
# print 'get_size_path_map : %d' % thermal.get_size_path_map()
# for x in range(thermal.get_idx_thermal_start(), thermal.get_num_thermals()+1):
# print thermal.get_thermal_to_device_path(x)
#
#if __name__ == '__main__':
# main()